Andek d



UNITED STATES PATENT tries.

MARK JOHN MASTERS, OF NEWV YORK, N. Y., ASSIGNOB OF THBEEFOURTHS TO BASIL D. VASSILIADES, CONSTANTINE D. VASSILIADES, AND ALEX- ANDER D. VASSILIADES, ALL OF SAME PLACE.

ADHESIVE POWDER FOR GILDING, 86C.

SPECIFICATION mining part of Letters Patent No. 388,984, dated September 4, 1888.

Application filed November 1, 1887.

To aZZ whom it may concern:

Be it known that I, IVIARK J OHN Mss'rnns, of the city, county, and State of New York, have invented a new and useful Improvement in Adhesive Powders for Metal Stamping on Fabrics, 86C of which thefollowingis a specification.

My invention relates to a new powder, whereby I am enabled to cause gold, silver, or other metal leaf to adhere to the surface of silk, card-board, paper, leather, satin, cloth, celluloid, ivory, wood, veneers, or any other material upon which stamped designs in metal are desired.

I prepare my said powder in the following manner: Equal parts of gum-sandarac and best golden yellow shellac are melted together in a water-bath, and there boiled for a period of about five hon rs. The mixtn re is constantly Stirred, so as to insure thorough mingling of the ingredients. At the end of the above time the compound is poured out upon a greased flat slab, so as to form a sheet about onequarter inch in thickness, which is allowed to cool and harden. After hardening, said sheet is broken up and ground to a very fine powder.

1 use this powder for the purpose named by applying it in a fine dust upon the surface to be stamped. Upon the powder thus ap plied Serial No. 254, 017. (No specimens.)

I place a leaf of the desired metal, and then subject said leaf to the pressure of asuitablyformed die, heated to a pointsufficient to cause fusion of the said powder beneath the leaf. In this way the leaf is caused to adhere to the material at all points covered by the 35 design. The loose powder and leaf outside the edges of the design are finally brushed off.

I find that by means of this powder I can stamp designs in metal upon materials of the smoothest surface--such as highly-finished o ivory, celluloid, or pasteboard-with remarkable sharpness and luster.

In other applications for Letters Patent simultaneously herewith filed by me I have fully described and claimed the process of 5 manufacture of the aforesaid powder, and also the process ofstamping in metal leaf by the aid thereof. The subject-matter of said applications is therefore herein disclaimed.

I claim- The powder composed of gum-sandarac and shellac, as and for the purpose set forth.

MARK JOHN MASTERS.

\Vitncsses:

PARK BENJAMIN, EDGAR GOODWIN. 

